The 4 signals, how come the green one is so WAVY?


Hi i’ve had a lot of sessions with Muse since getting it two months ago. What I did notice is that when I put on my headband and then click the headband icon I can see the 4 signals indicating that its working. However the green signal is SUPER wavy and not as flatlined as the other 3 signals. When I adjust my headband again for super tight fitness (to the point when I take it off it leaves a mark on my forehead) the green line then becomes flatline like the others.

What I want to ask is would this affect the data in anyway? Should all be flatlined to begin with? why the green one? and why does muse say its still ok to use even if the green line is all over the place?

I will post a pic when i get a chance